Electrophilic cyclization of o-acetoxy and o-benzyloxy alkynylpyridines: an easy entry into 2,3-disubstituted furopyridines
Autor: | Fabio Marinelli, Giancarlo Fabrizi, Sandro Cacchi, Antonio Arcadi, Di Giuseppe S |
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Jazyk: | angličtina |
Rok vydání: | 2002 |
Předmět: | |
Popis: | [reaction: see text] 2,3-Disubstituted furo[3,2-b]pyridines, 2,3-disubstituted furo[2,3-b]pyridines, and 2,3-disubstituted furo[2,3-c]pyridines are readily prepared under mild conditions via the palladium-catalyzed cross-coupling of 1-alkynes with o-iodoacetoxy- or o-iodobenzyloxypyridines, followed by electrophilic cyclization by I(2) or by PdCl(2) under a balloon of carbon monoxide. |
Databáze: | OpenAIRE |
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